package chapter05.examptle04;

public class examptle04 {
    public static void main(String[] args) {
        String s  = "itcast";
        System.out.println("将it替换成cn.it的结果："+s.replace("it","cn,it"));
        String s1 = " i t c a s t ";
        System.out.println("去除字符串两端空格后的结果："+s.trim() );
        System.out.println("去除字符串中所以空格后的结果："+s1.replace("","") );

    }
}
